Here is the step by step guide to back up your SMS without using PC suite.
1. Use Epoc Fileman or desktop fileman, goto "C:\System\Mail"
2. Copy the folder "C:\System\Mail" into your desktop
3. Remember to copy all files in "C:\System\Mail"
We are just finishing back up our SMS

Then how to restore your SMS message
1. First goto Messaging on your phone Then choose "Option>Other"
2. You will see "Memory in Use = Phone Memory"
3. Change it into "Memory Card" then click ok
4. Goto "C:" then replace "C:\System\Mail" with the one that we had backed up before
5. Then goto Messaging on your phone Then choose "Option>Other"
6. You will see "Memory in Use = Memory Card"
7. Change it into "Phone" then click ok
Then your message should restore like before.

› See More: [tutorial]Back up and Restore SMS without PC Suite